// This code is derived from jcifs smb client library <jcifs at samba dot org>
// Ported by J. Arturo <webmaster at komodosoft dot net>
//  
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
using System;

namespace SharpCifs.Smb
{
    internal class TransCallNamedPipe : SmbComTransaction
    {
        private byte[] _pipeData;

        private int _pipeDataOff;

        private int _pipeDataLen;

        internal TransCallNamedPipe(string pipeName, byte[] data, int off, int len)
        {
            Name = pipeName;
            _pipeData = data;
            _pipeDataOff = off;
            _pipeDataLen = len;
            Command = SmbComTransaction;
            SubCommand = TransCallNamedPipe;
            Timeout = unchecked((int)(0xFFFFFFFF));
            MaxParameterCount = 0;
            MaxDataCount = unchecked(0xFFFF);
            MaxSetupCount = unchecked(unchecked(0x00));
            SetupCount = 2;
        }

        internal override int WriteSetupWireFormat(byte[] dst, int dstIndex)
        {
            dst[dstIndex++] = SubCommand;
            dst[dstIndex++] = unchecked(unchecked(0x00));
            // this says "Transaction priority" in netmon
            dst[dstIndex++] = unchecked(unchecked(0x00));
            // no FID
            dst[dstIndex++] = unchecked(unchecked(0x00));
            return 4;
        }

        internal override int ReadSetupWireFormat(byte[] buffer, int bufferIndex, int len)
        {
            return 0;
        }

        internal override int WriteParametersWireFormat(byte[] dst, int dstIndex)
        {
            return 0;
        }

        internal override int WriteDataWireFormat(byte[] dst, int dstIndex)
        {
            if ((dst.Length - dstIndex) < _pipeDataLen)
            {
                if (Log.Level >= 3)
                {
                    Log.WriteLine("TransCallNamedPipe data too long for buffer");
                }
                return 0;
            }
            Array.Copy(_pipeData, _pipeDataOff, dst, dstIndex, _pipeDataLen);
            return _pipeDataLen;
        }

        internal override int ReadParametersWireFormat(byte[] buffer, 
                                                      int bufferIndex, 
                                                      int len)
        {
            return 0;
        }

        internal override int ReadDataWireFormat(byte[] buffer, int bufferIndex, int len)
        {
            return 0;
        }

        public override string ToString()
        {
            return "TransCallNamedPipe[" 
                        + base.ToString() 
                        + ",pipeName=" + Name + "]";
        }
    }
}
